Built, tested and benchmarked at IBM's Poughkeepsie, N.Y. plant, Roadrunner will perform calculations that will vastly improve the ability to certify the reliability of the U.S. nuclear weapons stockpile.

Beep beep! Sorry coyote, but you're still not wily enough to touch Roadrunner, IBM Corp.'s supercomputer, billed as the fastest in the world operating at 1 petaflop or 1,000 trillion calculations per second.

On Monday, HP said it reached a confidential agreement with rival Acer, dismissing all lawsuits between the two PC makers filed in various U.S. federal courts and with the U.S. International Trade Commission.

Dell and Lenovo are two joining several dozen companies, cities and nonprofit organizations to launch a campaign to fight global climate change. The campaign, "Together," is an initiative backed by The Climate Group, which was launched in the United Kingdom in 2007.